Zain, Huda Adnan and Batumalay, Malathy and Abdul Rahim, Hazli Rafis and Yasin, Moh and Harun, Sulaiman Wadi (2021) Effect of agarose concentration on coated micro-bottle resonators for humidity detection. Microwave and Optical Technology Letters, 63 (7). pp. 1826-1831. ISSN 0895-2477, DOI https://doi.org/10.1002/mop.32838.
Full text not available from this repository.Abstract
Agarose is a stable hydrophilic material commonly used for relative humidity sensing application. Agarose porous nature causes changes in its refractive index as relative humidity change. Micro bottle resonators are a promising choice for sensing applications due to their good quality factor. In this work, the effect of agarose gel concentration on micro-bottle ability to detect relative humidity changes was investigated. The agarose gel coating was made in two different concentrations 0.5% and 1%. These two concentrations were used as coating for microbottle resonators with the diameter of 190 mu m. The micro-bottle samples were made by the soften-and-compress technique. In the humidity range of 35%-85% RH, the 0.5% agarose gel coated microbottle had a sensitivity of 0.1077 dB/RH%. The microbottle resonator coated with the 1% solution showed a lower sensitivity of 0.0899 dB/RH%. This improvement in sensitivity with lower agarose gel concentration is due to the pore size of agarose gel. Yet, both concentrations showed improvement in sensitivity compared to the bare micro-bottle showing that agarose can be a potential choice for building sensitive efficient relative humidity sensors.
| Item Type: | Article |
|---|---|
| Funders: | INTI International University and Colleges |
| Uncontrolled Keywords: | Agarose gel; Humidity sensor; Micro; Bottle resonator; Relative humidity; Whispering gallery mode |
| Subjects: | Q Science > QC Physics T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 31 Mar 2022 04:28 |
| Last Modified: | 31 Mar 2022 04:28 |
| URI: | http://eprints.um.edu.my/id/eprint/27894 |
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